22443212355551 has 16 divisors (see below), whose sum is σ = 24338750768640. Its totient is φ = 20571938776800.

The previous prime is 22443212355491. The next prime is 22443212355563. The reversal of 22443212355551 is 15555321234422.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22443212355551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22443212315551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3136070 + ... + 7397388.

It is an arithmetic number, because the mean of its divisors is an integer number (1521171923040).

Almost surely, 2^{22443212355551} is an apocalyptic number.

22443212355551 is a deficient number, since it is larger than the sum of its proper divisors (1895538413089).

22443212355551 is a wasteful number, since it uses less digits than its factorization.

22443212355551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4264166.

The product of its digits is 1440000, while the sum is 44.

Adding to 22443212355551 its reverse (15555321234422), we get a palindrome (37998533589973).

The spelling of 22443212355551 in words is "twenty-two trillion, four hundred forty-three billion, two hundred twelve million, three hundred fifty-five thousand, five hundred fifty-one".